From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Production alterations to the governor controlled shock damper valve clearances.
| Identifier | ExFiles\Box 151\2\ scan0114 | |
| Date | 21th November 1933 | |
| KJGC To By: from Hs {Lord Ernest Hives - Chair} /Les: Hs {Lord Ernest Hives - Chair} /Les.7/KT.21.11.33. GOVERNOR CONTROLLED SHOCK DAMPER VALVE CLEARANCES RR.SCH.469. We find that in order to ensure that the high pressure valve does not stick, increased clearances are advisable. Will you please therefore instruct the following alterations for production. H.P. Valve F.85592: reduce the .312 -+ dia. to .3105 -+ L.P. Valve F.85591: reduce the .1557 -+ dia. to .1545 -+ The washer F.85595/9 should be deleted. The washer F.85399/403 will be required to allow for variation in the length of the bellows. Hs {Lord Ernest Hives - Chair} /Les. | ||